In context of environment, the term “dirty dozen” refers to _____...? Mcqs

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In context of environment, the term “dirty dozen” refers to _____...?

(A) 12 most harmful greenhouse gases
(B) 12 ozone depleting substances

(C) 12 persistent organic pollutants
(D) None of the above

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Keeping oneself clean is called...?

(A) Sanitation
(B) Hygiene

(C) Cleanliness
(D) Grooming

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The Velocity of light in a diamond is (whereas the refractive index of a diamond with respect to vacuum is 2.5)...?

(A) 5x10^8m/s
(B) 2.5x10^8m/s

(C) 1.2x10^10m/s
(D) 1.2x10^8m/s

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Twinkling of stars is caused by ...?

(A) Reflection of light
(B) Polarization of light

(C) refraction of light
(D) Interference of light

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Metal are highly ___________ ...?

(A) Electropositive
(B) Electronegativity

(C) Both of these
(D) Neutral

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Which of the following is the flightless bird...?

(A) Pavo cristatus
(B) kakapo

(C) Passer
(D) None of these

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Who proposed this concept “All motion is relative”...?

(A) Albert Einstein
(B) John Kepler

(C) Galileo Galilie
(D) None

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Human blood is divided into _____ main groups....?

(A) 4
(B) 2

(C) 3
(D) 1

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Which of the following is not a mosquito born disease...?

(A) Dengue fever
(B) Malaria

(C) Sleeping sickness
(D) Filariasis

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Which is the renewable source of energy...?

(A) Solar and wind
(B) Coal

(C) Natural gas
(D) Petroleum

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